Interior and exterior fastening means for sliding doors



July 16, 1957 P. o. PETERSEN INTERIOR AND EXTERIOR FASTENING MEANS FORSLIDING DOORS Filed Feb. 16 1956 3 Sheets-Sheet 1 INVENTOR.

Peter 0. Petersen July 16, 1957 P. o. PETERSEN INTERIOR AND EXTERIORFASTENING MEANS FOR sunmc DOORS Filed Feb. 16, 1956 Fly 4 3 Sheets-Sheet2 Peter 0. Petersen INVENTOR. By 214mm A Attorney:

July 16, 1957 P. o. PETERSEN 2,799,

INTERIOR AND EXTERIOR FASTENING MEANS FOR SLIDING DOORS Filed Feb. 16,1956 3 Sheets-Sheet 3 60 Fig 8 Fig.9

Peter 0. Petersen 22 IN VEN TOR.

BY MMB% United StatesPatent O" INTERIOR AND EXTERIOR FASTENING MEANS FORSLIDING DOORS Peter O. Petersen, Clear Lake, liowa Application February16, 1956, Serial No. 565,919 7 Claims. (Cl. 70100) This inventionrelates, generally classified, to fastening means for sliding closures.More particularly, it pertains to avertically disposed heavy-duty andso-called industrialtype sliding door, for example, a door such as wouldbe used in a warehouse construction or any similar large garage, toolshed, barn or the like in combination with novelly designed andpractical hardware through the medium of which the door, either aninside or outside sliding type, may be reliably fastened.

As a matter of common knowledge, doors in the category mentioned areusually provided with a conventional hinged hasp for cooperation with acommon fixedly mounted staple, the latter being mounted on the wall ordoor frame member, as the case may be. A simple padlock provides thecustomary means for fastening the hasp to the staple. Although thisarrangement is recognized by many to be outmoded and lacking in safetyrequirements it is nevertheless currently in use and is ad vocated inthe interest of economy. Prior art constructions and improvements havebeen offered but for one reason or another have not met with widespreadacceptance and endorsement. One such adaptation is disclosed, forexample, in my copending application Serial No. 538,382, filled October4,1955.

The subject matter of the stated pending application has to do with thecombination of a stationary door frame member, wall or the like, ahorizontally sliding suitably mounted door having an edge portionshiftable toward and from one of the vertical elements of the door framemember which latter is provided with a keeper hole. A latch is slidablymounted on the door frame member and has one end portion projectablethrough and beyond the keeper hole to the exterior side and theprojecting portion is provided with an opening which is adapted toaccommodate the shackle of a readily attachable and detachable padlock.Handle means, also exteriorly located, is connected with an end portionof the latch bolt. The invention is satisfactory insofar as it goes butit has been noted time and again that in large industrial warehouses itis not at all unusual to encounter an elongated building having a dozenmore or less sliding doors with the employees entrance or exit door, theusual key controlled type, located somewhere near the end of thebuilding, say adjacent to the office or similar place. What with thefact that under certain emergency conditions it is often necessary toget to the outside if and when trapped, it is often necessary to travelthe full distance of the building to make ones exit. i

There has long existed a need for sliding door fastener means which maybe securely locked, from the outside without depending upon a merepadlock and with means on the inside making it possible for one to leavethe building by way of any selected sliding door. Therefore, and as willbe substantially self-evident by glancing at the views of the drawings,the invention has for its principal objective a combination of therequired expedients which include, briefly summarized, a stationarymasonry wall or an equivalent door frame member, a

P tented July 16, 1957 slidably mounted door having an edge portionshiftable toward and from said door frame member and provided with akeeper, a latch bolt slidably mounted on the door frame member andhaving an end portion projectable into said keeper wherein saidprojectable portion is provided with a shoulder, handle means carried byboth exterior and interior portions of the latch bolt and thereforeaccessible either inside or outside, and a key controlled lock carriedby the door and situated adjacent to the shouldered portion of the latchbolt and having a spring projected latch bolt releasably engaging saidshoulder when the door is closed.

More importantly the key controlled lock has a cylinder and barrel, moreor less as usual, which is mounted in the door and which provides thekey operated means on the exterior of the door, the lock casing on theinterior having a knob whereby the customary spring projected butretractible latch bolt may be withdrawn to release the shouldered latchbolt for operation either from the interior or exterior of the building.

Other objects, features and advantages will become more readily apparentfrom the following description and the accompanying sheets ofillustrative drawings.

In the drawings:

Figure 1 is a fragmentary perspective view of the wall and sliding doorseen from the inside of the building and depicting certain essentialfeatures of the over-all invention;

Figure 2 is a fragmentary outside elevational view illustrating theparts seen from this point of observation;

Figure 3 is an enlarged fragmentary section and elevation taken on thehorizontal line 33 of Figure 2, looking in the direction of the arrows;

Figure 4 is a view at right angles to Figure 3 with the section taken onthe irregular section line 44 of Figure 3 looking from right to left;

Figures 5 is a view in elevation of a bracket which constitutes one ofthe components of the over-all hardware;

Figure 6 is a fragmentary perspective view similar to Figure 1 andshowing a modification of the over-all concept;

Figure 7 is an enlarged fragmentary sectional and elevational View, ahorizontal section, similar to Figure 3, but taken through theconstruction depicted in Figure 6;

Figure 8 is a fragmentary perspective view of what may be called aZ-iron;

Figure 9 is a perspective view of one of the expedients used and seenbest in Figure 7; and

Figure 10 is a horizontal sectional and elevational view similar toFigures 3 and 7 but showing a further modification and being on asmaller scale.

By way of introduction to the drawings it is to be noted that theinvention is applicable to what are commonly referred to in the trade aseither inside or outside horizontal sliding warehouse and garage doors,the heavy-duty type. The inside type shown is shown in Figures 1, 2, 3,4, 6 and 7 and the outside type in Figure 10.

Reference is had first to the form of the invention seen in Figures 1 to5 inclusive.

As perhaps seen best in Figure 3 the numeral 12 denotes what may bedesignated as a masonry wall of a building, or any equivalent meanshaving a latch bolt hole 14 therethrough and having a marginal orequivalent metal channel or shield forming one of the door frame membersas at 16. This is also suitably apertured to permit passage of the longarm 18 of the projectable and retractible J-shaped latch bolt. The outerend is screw threaded as at 20 and suitable handle means 22 is mountedthereon and partly locked or held in place by a jam nut 24. This servesas an abutment as shown in dotted lines in Figure 3. The inner endportion 26 of this long arm projects through and beyond the interiorsurface of the wall for cooperation with the horizontal sliding door 28.As shown in Figure l a suitable stop bracket 39 is provided to check themovement of the cooperating edge 32 of the door. There is anotherfixture or bracket at 34 and this is characterized by a plate or shelfportion 36 with a guide 38 at one end. The numeral 4t} designates anattaching flange and a reinforcing web. This bracket is fastened ormounted on the door frame member 16 and projects inwardly serves as aguide and shelf for the cooperating short arm 44 and terminal detent 46.That is to say, the bracket keeps the latch bolt from turning axiallyand consequently limits it to an in and out sliding movement. While thehandle means 22 serves to operate the latch bolt from the outside asuitable finger grip or handle 48 is provided on the long arm to operatethe latch bolt from the inside. Also at the juncture of 44 and 46 asuitably formed notch provides a shoulder 50. The shouldered detentprojects into the suitably lined keeper socket 52. Used in combinationwith this inside-outside manually projectable and retractible latch boltis a key controlled lock. This is more or less of a conventional typeand is characterized, generally speaking, by a casing 54 which isscrewed on the interior surface 56 of the door as at 58. This has aspring projected manually retracted latch bolt 60 which is releasablyengagea-ble with the shoulder 59. The bolt may be retracted by way of anoperating knob 62 available from the inside of the building. The boltmay also be retracted by way of the so-called key turned cylinder means64 which is mounted in the door. This means as shown in Figure 2comprises a cylinder 66, a barrel 68 and key hole means 7%. Thus thekey-com trolled lock is also operable from the inside and outside and iscarried by the door. Consequently there is latch bolt means carried bythe frame or wall and key control lock means carried by the door and allof the parts combine in contributing their proportionate function andshare in the over-all novel combination seen particularly well in Figure3.

With reference now to the slight modification seen in Figures 6, 7, 8and 9 it will be evident by comparison with the already describedfigures that the principle of construction is the same as that covered.In fact the embodiments are so closely allied that it seems unnecessaryto resort to a separate system of designating numerals. In other wordsthe wall and door are denoted at 12 and 28 and the parts of the keycontrolled lock are designated by the numerals already given. It will benoted that in this arrangement the bracket 34 is dispensed with. In thisadaptation the J-shaped projectable and retractible latch bolt 17 isnon-circular in cross-section. Specifically, it is square and the longarm 18 operates through a pasage 14 and the outer end portion is keyedagainst rotation in a non-circular neck 72 forming a part of a faceplate '74 fastened to the exterior 76 of the Wall. The intermediateportion operates through a similar non-circular keying and guiding neck78 which is carried by the flange 80 of the full length Z-iron 82. Thisis substituted for the aforementioned short bracket 35) and extends fromthe floor to the ceiling. It is arranged as seen perhaps best in Figures6 and 7 Where it will be seen that the flanges 84 and 86 thereofconstitute reliable abutment means for the cooperating edge of thesliding door 28. Therefore by providing the sleeves 72 and 78 ofnoncircular cross-section and using a correspondingly constructed longarm for the latch bolt the latter is permitted to slide in and out butis prevented from rotating about its axis. This is a comparativelysimple mode of mounting the latch bolt. Gtherwise Figures 1 to representan aspect of the concept which is generic with that depicted in Figures6 to 9 inclusive.

Reference is had now to the modification shown in Figure wherein thesliding door 83 is an outside type and has an interior keeper socket94). The casing 54 of the key control lock is mounted on the door andthe knob 62 and latch bolt 60 are as already described. So is theexterlorly accessible key controlled cylinder means 64. The numeral 92designates an appropriate stop carried by the outside surface of thebuilding wall or door frame means 94. Here the door frame means includesuprights or studs 96 provided on opposite sides with guide and mountingstaples 98 to accommodate the parallel limbs 1th) and 162 of theU-shaped projectable and retractible latch bolt TM. The bight portion1436 is provided with a screw eye or the like 109 constituting theoperating handle which is used to release the latch bolt from the insideof the building. The outer end of the limb 190 has a notch 110 thereinand provides a detent extending to the keeper socket 9t} utilizing thesame principle already described. The hole in the wall for the limb 1&2is denoted at 112 and the outer accessible end at 114, the handle at 116and the assembling nut at 118.

It will be evident that the form of the invention just described andseen in Figure 10 is fundamentally the same as that already describedand involves the use merely of a U-shaped latch bolt instead of aJ-shaped bolt. The combination of parts is basically that alreadydescribed.

While it is true that the art shows safety-type sliding doors whereinso-called emergency-type panic bars are utilized it will be seen thatthe invention herein disclosed accomplishes similar safe guardingresults. It is felt, however, that it is perhaps unnecessary to dwell atany length on special installations or unexpanded description of theoperation since this is no doubt self-evident from the drawings anddescription.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction and operation shown anddescribed, and accordingly, all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention asclaimed.

What is claimed as new is as follows:

1. In combination, a stationary masonry or equivalent building wall, aslidably mounted door having an edge portion shiftable toward and fromand cooperable with an edge portion of said wall and having a keeper, alatch bolt slidably mounted on said wall and having an end portionremovably projectable into said keeper, said end portion being providedwith a shoulder, handle means carried by said latch bolt and accessibleand operable from the exterior side of said wall, and a key controlledlock carried by said door and having a spring projected latch boltreleasably engaging said shoulder when the door is closed.

2. The structure defined in claim 1 and wherein said key controlled lockembodies a casing mounted on the interior of said door and which isprovided with the spring projected latch bolt and a knob accessible andserving to retract said spring projected latch bolt from the inside ofthe building.

3. The structure defined in claim 2 and wherein said lock also includesa key controlled cylinder which is mounted in said door in a manner toreceive the usual key from the exterior side of said door, whereby thedoor may be closed and locked from the outside, opened without a keyfrom the inside and wherein the operation of said spring projected latchbolt is under the control of said lock.

4. The structure defined in claim 3 and wherein the first named manuallyactuatable latch bolt is provided with handle means actuatable andaccessible from the interior of the building.

5. In combination, a relatively stationary wall provided with a doorstop, a slidably mounted door having an edge portion slidablyoverlapping an edge portion of said wall and an edge engageable withsaid stop, said wall having an opening therethrough, said door having akeeper socket therein, a manually actuable latch bolt slidably mountedon said wall with a portion extending through said opening with an outerend portion projecting beyond the exterior of the wall and provided witha handle, an interior portion projecting beyond the inside end of theopening and provided with a second handle, the projecting end of saidlatch bolt on the interior providing a detent and said detent extendinginto said keeper socket, said detent portion having a shoulder, and akey controlled lock having a knob and easing portion mounted on theinterior of the door and a key controlled barrel and cylinder accessiblefrom the exterior of the door and including a spring pressed lock boltengageable with said shoulder.

6 6. The structure defined in claim 5 and wherein said latch bolt isJ-shaped in plan and non-circular in cross section.

7. The structure defined in claim 5 and wherein said latch bolt isU-shaped in plan and circular in cross section.

References Cited in the file of this patent UNITED STATES PATENTS

